On Fri, 3 Mar 2023 at 03:28, Jason-ch Chen <jason-ch.chen@xxxxxxxxxxxx> wrote:
>
> From: jason-ch chen <Jason-ch.Chen@xxxxxxxxxxxx>
>
> The res might be NULL when calling resource_size.
>
"resource_size" ? What is that?
> Signed-off-by: jason-ch chen <Jason-ch.Chen@xxxxxxxxxxxx>
> ---
> drivers/remoteproc/mtk_scp.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
> index eacdf241f4ef..863d18f63f58 100644
> --- a/drivers/remoteproc/mtk_scp.c
> +++ b/drivers/remoteproc/mtk_scp.c
> @@ -829,6 +829,9 @@ static int scp_probe(struct platform_device *pdev)
> platform_set_drvdata(pdev, scp);
>
> res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sram");
> + if (!res)
> + return -ENODEV;
> +
Please have a look at the implementation of devm_ioremap_resource()
along with the function it calls and let me know if your patch is
needed.
> scp->sram_base = devm_ioremap_resource(dev, res);
> if (IS_ERR((__force void *)scp->sram_base)) {
> dev_err(dev, "Failed to parse and map sram memory\n");
> --
> 2.37.3
>
